1. Tardigrade
  2. Question
  3. Biology
  4. Which was first photosynthetic organism?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Which was first photosynthetic organism?

Delhi UMET/DPMTDelhi UMET/DPMT 2003

Solution:

Cyanobacteria (blue-green algae) were first photosyntheiic organisms. They contain photosynthetic lamellae equivalent to thylakoids, hence these are autotrophic. Green algae (Chlorophyceae) are autotrophs like higher plants, they evolved later. They contain chlorophyll-$a$ and $b$. Red algae (Rhodophyceae) are generally marine plants. They contain chlorophyll-$a$ and $d$.